Mario Aguilar

The FAA lost contact with a Cessna 421 shortly before 9AM this morning. The pilot, it turns out, was unconscious, and the plane ultimately slammed into the Gulf of Mexico 135 miles off the coast of Florida. The pilot has been identified as Dr. Peter Hertzak.

According to reports, the unconscious pilot who crashed into the the Gulf of Mexico earlier today…
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The plane departed, as planned, at 6:43 AM CT. It gained altitude and speed fairly regularly until the FAA mysteriously lost contact with the pilot. Luckily, the plane didn't ever veer off towards land, and it merely followed an loopy, circling path. In the image above from Flight Aware, you can see an FAA controller's worst nightmare.

Planned flight: 485 miles. Actual flight: 1225 miles.

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Here's the flight's average speed and altitude, courtesy of Flight Aware.

The plane takes off as it should, and then everything goes crazy. It maintains the same altitude for the duration of the flight until it plummets into the Gulf of Mexico. As you see in the image above, the circling path causes the variation in speed after the pilot loses consciousness. When the plane hits a headwind, the speed goes down; when the plane has the wind at its tail, it goes up.

Nobody knows why exactly the pilot was unconscious on what should have been a routine private plane flight from Slidell, Louisiana to Sarasota, Florida. As the FAA followed the plane's trajectory with from the ground the plane was tracked by F15s 27,000 feet in the air. The F15s reported that the windows of the plane were fogged over, which might indicate that the plane lost pressurization, which would have knocked the pilot out in seconds.

It's unclear if anybody besides the unconscious pilot was onboard the plane, but the Coast Guard is currently conducting a search and rescue operation of the area hoping to find any survivors. The Coast Guard also put out an alert to other boats in the area.

Below are our updates from when the story was developing.Update 1: 12:21pm

According to NORAD, they expect the plane to crash in about 10 minutes, at 12:30. That image above courtesy of Flight Aware shows the plane's trajectory.

Update 2: 12:25

According to NBC FW, the plane is far away from land and will plunge into the water. There's no word on why the pilot is unconscious.

Update 3: 12:31
The plane should be down by now.

Update 4: 12:34
According to Fox News' Peter Doocy on Twitter: "NORAD wouldnt answer Q's about whether or not they will take down unresponsive plane if it threatens civilian areas, but they are monitoring"

Update 5: 12:35The plane is now officially down 170 miles off the Gulf of Mexico, which was expected but still awful for the friends and family of the pilot and anyone else on board,